Because of greed in most cases. When someone sees they made a 30% return their greed tells them it will go 100% because another token recently made a similar rally. This is not impossible for a project to achieve but this sentiment should not be based on emotion but on fact and news. Also, there is a saying in the financial market and that is to buy the rumors and sell the news. So if there was a rumor about any major event and you are planning to buy it after the news has been released then you should not because the market already pushes the price because of the rumors and people will sell off after the release of the news. So you will only be their exit liquidity in that time.
Greed should be controlled by all means especially when trading because if you use 30% and you make a good return, the next time comes lower than that 30% because it might be that when you use 100% you might just lose everything and it will look like a miracle. emotions make you weaker and might even drive you to make some irrelevance decision that might cost your entire assets trading is a mind game and if you do not play well when everything will be at risk. sometimes news and rumors are traps so if you follow things like that then it is trouble it is better to observe every situation well before making any move, do not just make a move out of emotional certainty. and if anyone should know how these things work then you don't have a problem with trading.
Human beings are naturally greedy and we cant really be able to deny from that, it is really just that there are people who are really that good when it comes to self control and there are ones who are really that good
when it comes to discipline on which they arent really that busting up themselves if ever they would really be that engaging with gambling which we know that expenses or spending is really that on severe manner.
If you are a type of person whose really that impulsive when it comes to emotion then most likely you would really be having this kind of failure.
When it comes to trading then it would really be just that depending on how well you would really be handling yourself on trading because if you wont really be making
out some adjustments then you would really be that definitely be not be able to succeed on this one. This is why it would be just that depending
on how well you would really be that handling into yourself into this market.